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Finding the Fourth Proportional to 19,113, 26,388.66 and 14,659.98

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Solution

The fourth proportional to 19,113, 26,388.66 and 14,659.98 is: 20,240.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113 : 26,388.66 = 14,659.98 : x
  2. Step 2: Convert to fraction form
    19,113/26,388.66 = 14,659.98/x
  3. Step 3: Cross multiply
    19,113x = 26,388.66 × 14,659.98
  4. Step 4: Simplify right side
    19,113x = 386,857,227.83
  5. Step 5: Solve for x
    x = 386,857,227.83/19,113
  6. Step 6: Final answer
    x = 20,240.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.